Receivers of the



(No Model.)

No. 479,775. Patented July 26, 1892.

(No Model.) 2 Sheets-Sheet 2. O. S. FULLER. FLOUR BOLT.

Patented July 26, 1892.

I [WE/V7022. l

' WITNESSES UNITED STATES PATENT Prion.

CLARK S. FULLER, OF LAFAYETTE, INDIANA, ASSIGNOR TO RUFUS II. EMER- SONAND ZENAS C. ELDRED, OF JACKSON, MICHIGAN, RECEIVERS OF THE G. T. SMITHMIDDLlNGS PURIFIER COMPANY.

FLOUR-BOLT.

SPECIFICATION forming part of Letters Patent No. 479,775, dated July 26,1892.

Application filed June 16, 1891. Serial No. 396,421. (No model.)

To all whom it may concern.-

Be it known that I, CLARK S. FULLER, a citizen of the United States,residing at Lafayette, in the county of Tippecanoe and State of Indiana,have invented certain new and useful Improvements in Flour-Bolts, ofwhich the following is a specification, reference being had therein tothe accompanying draw- 1ngs.

IO The invention relates to flouring-bolts which have a revolving screenor reel. In this class of bolts as ordinarily constructed there is greatliability that the material to be sifted will accumulate in the lowerpart of the bolt I5 to an objectionable extent.

The object of my invention is to obviate that objection and insure abetter distribution of the material over a greater extent or area ofbolting-cloth than has hitherto been accomplished.

I desire to limit this case to the inventions specifically referred toin the claims, many others which are illustrated herein constituting thesubject-inatterof concurrent application, Serial No. 102,042, of minefiled June 27,

Figure 1 is a longitudinal section of a bolt containing my improvements.Fig. 2 is an elevation of the head end or receiving end.

Fig. 3 is a vertical transverse section on line at m, Fig. 1, looking inthe direction of the arrow 1. Fig. 4 is an enlarged sectional view v ofthe mechanism, whereby the elevators are moved into different positionsrelative to the 55 adjacent bolting-cloth. Fig. 5 is a vertical sectionshowing a modification; and Fig. 6 is a transverse vertical section online y 11 Fig. 5, looking in the direction of the arrow 2.

A A represent generally the framework and easing, which may be of anyordinary or approved construction.

15 is the central shaft mounted in bearings upon the frame.

C is the head of the reel at its receiving 5 end.

D is the head of the reel at its discharge end.

d d are longitudinal ribs connecting the heads C D, six such ribs beingshown in the drawings; buta greater or less number may be employed, aspreferred.

E is the bolting-cloth, which is secured to the inner sides of the ribsd. As these ribs do not project inward beyond the cloth, it will be seenthat the bolting-surface is practically unbroken and that the angles atthe ribs offer little or no obstruction to the sliding of material.

c is a spider, whereby the head C is secured to the shaft B, and d is asimilar spider connecting the head D with the shaft.

G Garelongitudinal plates or buckets adapted to operate as elevators.These elevators are arranged in the reel near the ribs (1, and in thisinstance are pivoted to the heads C D. The elevators are pivoted at ornear their inner edges, so that by turning them on their pivots theouter edges can be moved away from the bolting-cloth or made to approachit. They are held in their elevated or normal positions by springs h,which are attached at their inner ends to the plates and at theiropposite ends to supports 72., attached to the adjacent heads of thereel, the outer edges of the ele vator being arranged at short distancesfrom the inner surface of the bolting-cloth. The pivot at one end ofeach elevator projects through one of the heads of the reel, as shown inthe drawings, and is provided at the outer side of the head with arocking arm 2'.

K is a stop or cam secured to the frame near the head 0 in such positionthat as the reel revolves these arms successively engage with the camand turn, tilt, or depress the buckets or elevators relatively to thebolting-cloth. so as to discharge from the elevators material which hasbeen by them carried up from the lower part of the bolt. It will be seenthat as the reel rotates in the direction indicated by the arrow 3 inFig. 3 the mechanism which connects the elevators with the end of thebolt operates to automatically tilt or oscillate said elevators whenthey have reached suitable positions during the rotation of the reel.

The stop K is preferably constructed on its 5 face with a number ofshoulders or ratchets Z, over which the arm 1' travels as the reelrotates, and whereby the elevator is jarred, oscillated, or tilted alittle at a time, thereby causing the material to be discharged from theelevator in small quantities, successively. Of course the position ofthe stop and the distance between its ratchet-teeth may be varied tosecure the best results, according to the circumstances of each case andthe position which it is desired the elevator shall occupy relative tothe bolting-cloth and the deflectors. By means of such changes thecharacter of the oscillations of the elevators may be so varied as toregulate the proportion of, the elevated material which is delivered tovarious parts of the bolting-cloth. When the arm 2' has passed the stop70, the springs return the elevator to its normal position.

N N indicates the deflector, which, in this instance, is supported onthe shaft by means of cross-girts n n, which have bearings adapted torest upon the shaft. These parts constitute a double deflector in whichthe opposite sides incline in opposite directions from the verticalplane of the axis of the reel, with its lower edges in close proximityto the elevators on the upward-moving side of the reel and on thedownwardmoving side, respectively, and both located at some distancebelow the axis of the reel.

0 is a weight attached to a cross-girt 0, attached at its ends to thesides of the deflector, and serving to keep said deflector in suitableposition upon the shaft.

It will be readily understood from an examination of the drawings andthe foregoing description that material can be carried by the elevatorson the upward-moving side of the bolt, (the reel running in thedirection indicated by arrow 1, Fig.- 2,) and that as each elevator inits turn passes stop It the engagement of the arm i therewith will tiltthe elevator and discharge more or less of its contents upon thebolt-cloth below. Such material, however, as is not discharged over theouter edges of the elevators and against the bolt-cloth below will asthe reel revolves be discharged over the inner edges of the elevatorsand, falling upon the deflector,will pass thence to the bolting-clothupon the upwardmoving side of the bolt or upon the downward-moving side,as the case may be, depending somewhat upon the character of thematerial being sifted and the speed of rotation of the bolt. It is wellknown that particularly in the ordinary construction of bolts which haveno revolving beater-s material is frequently carried up some distanceabove the shaftor axis of the reel and dropped down upon the material inthe bottom, which has been found to be objectionable, because it drivesspecks through the cloth. This obj ec tionable mode of operation isentirely obviated by my invention, a further advantage of my bolt beingthe increased amount of bolting-surface through which material issifted.

It will be seen that by reason of the deflector being shorter than thereel and supported between the ends of the reel and upon thereelsupports I am enabled to connect both heads of the reel to a commonthrough-shaft, so that both ends of the longitudinal ribs and of theelevators can be positively driven from that shaft, and the fineimpurities will be collected in the eddy-chamber within the deflectorand discharged at the same outlet with the tailings, as will beexplained. Of course if from any cause the stop K is omitted or becomesinoperative, a very much larger proportion of the material will bedischarged upon the deflector and pass thence to the bolting-surface. Anair-current sufficient to remove the light impurities is caused by therevolution of the reel and its feeding devices. The material which fallsfrom the elevators upon the deflector is deflected by the latter partlyagainst the bolting-cloth and partly against the elevators, and by thisdashing action the material is loosened and the light impurities arecaused to become suspended in the air, while the other valuableparticles are caused to pass through the bolting-cloth. The two parts ofthe deflector diverge downward and form a bridge resembling an arch withits lower ends distended and separated by a wide opening, which permitsall the heavy and valuable particles which may enter the space underthe1nachine to drop upon the mass of material below, while it allows atthe same time the free entrance of the floating material into the quietspace or ch amberN under thearch. This floating material finally escapesfrom the chamber N through the spaces above the cross-girth. at the tailend of the machine, and thence out through the devices for dischargingthe tailings, which I will soon describe. It will be understood that byreason of the bearings for the reel-shat ts being made aboutmidwaybetween the ends of the girts n n and the deflector sides N Nbeing arranged at about equal distances from the axis of the reel andupon opposite sides thereof they will be supported in the proper workingposition by comparatively small counterbalancing weight 0, and that thespiders c d of the reel-heads are adapted to engage with the cross-girts'n n to prevent longitudinal movement of the deflector upon theshaft B,which constitutes the reel-supand is retained in its proper inclinedposition by a depending weight Q.

In all the figures the construction of'parts is such that material whichis discharged from the elevators is delivered to the bolting-cloth andsifts through it, portions of such mate rial sliding over the inner faceof the cloth. In Figs. 5 and 6 a single board, thus hung upon thereel-shafts with its upper and lower edges projecting above and belowthe reelaxis and also upon opposite sides of the vertical plane of theaxis, serves to collect all or practically all of such material as maybe carried above the reel-axis by the elevators and prevent it fromfalling upon material in the bottom of the bolt, thus attaining some ofthe advantages of the two deflectors of the other figures with a verymuch more simple and cheap construction and one which is very much moreeasily applied, especially to reels already in position in mills in suchsituations as to make it difficult to take the reel apart, as might befound necessary in order to put in the other form of deflector. In bothconstructions R represents a screw-conveyer which is secured to theshaft B at the tail end of the reel, and r is the trough of the conveyerprovided on the inner side'of the reel-head D with a receiving-hopper Sand at the outer end of said head with a dischargingspout s. T Trepresent short buckets or flights which are secured to the inner sideof the head D, near the bolt ing-cloth, and operate to elevate thematerial which has passed through the meshes of the bolting-cloth anddeliver the same in and to the receiving-hopper of thedischarge-conveyers.

The material to be bolted is introduced into the reel through a centralopening of the head 0 by a spout or other suitable feed device.

In another concurrently-pending application of mine, Serial No. 102,042,filed June 27, 1883, I have illustrated some of the inventions which areclaimed herein; but in that case I have shown the elevators as beingsupported with their outer. edges at short distances from thebolting-cloth and do not in this case desire to claim any inventionsinto which such last-referred-to construction enters. In that case, No.102,042, I have illustrated the elevating blades or buckets as havingcombined with them pivotal connections, crank-arms, and a stop or camattached to the frame of the bolt; but I do not in that case claimprotection for any of those inventions whereby the elevating blades orbuckets are made movable or capable of oscillating relatively to thebolting-cloth, such features being the subject-matter of part of theclaims herein.

What I claim is 1. The combination, with a bolting-reel, of elevatingbuckets or plates movable independent of the reel and arranged on theinner side of the bolting-surface and means whereby said buckets orplates are automatically caused to discharge the material restingtherein, substantially as set forth.

2. In a flour-bolt, the combination, with the bolting-reel, of a seriesof internal oscillating elevators hung thereon and mechanism connectingeach elevator with the end of the bolt, whereby the rotation of the reelcauses a positive oscillation of the elevatorsto discharge the material,substantially as set forth.

3. In a flour-bolt, the combination, with the bolting-reel, of a seriesof elevators journaled therein and each provided at one end with acrank-arm and a cam engaging with the crank-arm, whereby the revolutionof the reel causes the oscillation of the elevators to discharge thematerial, substantially as set forth.

4. The combination, with a bolting reel, of buckets g, provided withsprings h and arms 2', and a stop whereby the buckets are turned ordepressed, substantially as set forth.

5. The combination, with a bolting-reel, of buckets or plates g,provided with a spring h and arms'i, and a stop havingaface constructedwith a series of shoulders or ratchets, substantially as set forth.

6. The combination, with a bolting-reel, of

buckets or plates arranged on the inner side of the bolting-surface,mechanism whereby the buckets are automatically depressed, turned fordischarging the material thereon, fixed buckets secured to the dischargeof the reel, and a discharge-trough which receives tailings elevated bythe buckets at the discharge end of the reel, substantially as setforth. I

7. The combination, with a bolting-reel, of buckets or plates arrangedon the inner side of the bolting-surface, mechanism whereby said bucketsor plates are automatically depressed or turned to discharge thematerial resting thereon, and a deflecting-plate whereby the materialwhich has not been discharged over the outer edges of the buckets iscollected and returned to the working side of the reel, substantially asset forth.

8. In a flour-bolt, the combination, with a bolting-reel provided with ashaft 1), of elevators movable independently of the reel and arranged onthe inner side of the bolting-sun face and a deflecting-plate hungloosely on the shaft and provided with a weight whereby it is held inposition, substantially as set forth.

9. In a flour-bolt, the combination, with the shaft 1), of the deflectorprovided upon its upper surface with bearings, the upper and lower edgesof the deflector being arranged upon opposite sides of the axis of thereel, and a weight attached to the under side of the deflector at bothends by the brackets, substantially as set forth.

10. In a flour-bolt, the combination of a reel-frame and elevatorarranged within the reel and adapted to be automatically tilted intodifferent positions as the reel rotates, substantially as set forth.

11. In a flour-bolt, the combination, with a bolting-reel, of aneddy-chamber having its lower side open and having one inclined sidefacing and adjacent to the downward-moving side of the reel,substantially as set forth.

12. In a flour-bolt, the combination, with a bolting-reel provided uponits inner surface ICC with a. series of elevators, of a deflector havingthe lower edge of one of its sides in close proximity to the elevatorson the upwardmoving side of the reel and having the opposite edge inclose proximity to the elevators on the downward-moving side of thereel, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

CLARK S. FULLER. Witnesses:

VILLIAM H. DOTY, S. T. STALLARD.

